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72025289 = 716136379
BaseRepresentation
bin1000100101100…
…00010011001001
312000112021010022
410102300103021
5121414302124
611051430225
71533130160
oct422602311
9160467108
1072025289
1137724736
1220155375
1311bca61b
1497cc3d7
1564cac5e
hex44b04c9

72025289 has 8 divisors (see below), whose sum is σ = 82378560. Its totient is φ = 61688016.

The previous prime is 72025271. The next prime is 72025319. The reversal of 72025289 is 98252027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72025289 - 28 = 72025033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72025229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8102 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (10297320).

Almost surely, 272025289 is an apocalyptic number.

It is an amenable number.

72025289 is a deficient number, since it is larger than the sum of its proper divisors (10353271).

72025289 is a wasteful number, since it uses less digits than its factorization.

72025289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 72025289 is about 8486.7714120271. The cubic root of 72025289 is about 416.0654656125.

The spelling of 72025289 in words is "seventy-two million, twenty-five thousand, two hundred eighty-nine".

Divisors: 1 7 1613 6379 11291 44653 10289327 72025289